A small amount of seawater that gets into the eye is usually fine, but if more seawater gets into the eye, it may lead to redness and swelling of the eye, or even bacterial conjunctivitis, for example.
The eye experiences a stress reaction when foreign objects such as seawater enter the eye, and they can be expelled by blinking, for example. So, a small amount of seawater entering the eye is usually fine. However, if a large amount of seawater enters the eye and the eye is unable to expel it in time, the large amount of hydrochloric acid in seawater will damage the conjunctiva or cornea, resulting in redness, swelling, pain, and other uncomfortable symptoms.
In addition, seawater also contains a large number of bacteria and microorganisms, a large number of eyes, not treated in time may lead to conjunctival infection, which may induce bacterial conjunctivitis or other eye inflammation.
It is recommended to protect your eyes when playing at the beach, and rinse them with water in a timely manner after the seawater enters your eyes to avoid the damage caused by seawater to the eyes.